I have reloaded for a while now and I notice that the 38 cases will sometimes have a bulge near the bottom of the cartridge. Its like a ring around the cartridge. I believe I have the dies adjusted correctly. When I size them it seems to size fully. I don't have problems with 357's or other calibers for that matter. They will fit in the cylinder, but they are tight. I use rcbs dies and I have several sets and both seem to have the same problem. Any ideas out there.

Thanks, David